RE: Logical File or OPNQRYF or any other way ? - Legacy iSeriesFlat Files

["Wilt, Charles" <CWilt@xxxxxxxxxxxx>]

Dave,

I think Joe's reply pertty much covers what you've said here:
"But, alas, from the S/38 to now, the S/38 and its follow-ons are not
truly relational and most of the files found thereon are generated as
flat files although some are using what they have of a DB2-type engine. 
Oh, my, I have just committed blasphemy, at least per Rochester and
those that follow their dogma.  

I know, I know, IBM Rochester has told you for decades the S/38,
AS/400, iSeries, etc., is a relational database.   I believed that as
well back in 1984 after being indoctrinated by the S/38 folks in IBM
classes.  But sadly, it was and is not true."

Let me add my observations: the problem isn't DB2 for iSeries, as DB2 for 
iSeries is as relational as any other RDBMS out there.  The problem is most 
databases found in DB2 for iSeries aren't relational.

For a relational DB to be managed by a relational DBMS, there have to be 
relationships between the data defined.  All too often, DBs on the iSeries 
don't have primary and foreign keys defined.

Charles Wilt
iSeries Systems Administrator / Developer
Mitsubishi Electric Automotive America
ph: 513-573-4343
fax: 513-398-1121